Carrier 50PCH specifications Field Selectable Inputs, Complete C Control Jumper Settings Refer to

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FIELD SELECTABLE INPUTS

Jumpers and DIP (dual in-line package) switches on the control board are used to customize unit operation and can be configured in the field.

IMPORTANT: Jumpers and DIP switches should only be clipped when power to control board has been turned off.

Complete C Control Jumper Settings (Refer to Fig. 13 and 16)

WATER COIL FREEZE PROTECTION (FP1) LIMIT SETTING — Select jumper 3, (JW3-FP1 Low Temp) to choose FP1 limit of 10 F or 30 F. To select 30 F as the limit, DO NOT clip the jumper. To select 10 F as the limit, clip the jumper.

AIR COIL FREEZE PROTECTION (FP2) LIMIT SET- TING — Select jumper 2 (JW2-FP2 Low Temp) to choose FP2 limit of 10 F or 30 F. To select 30 F as the limit, DO NOT clip the jumper. To select 10 F as the limit, clip the jumper.

ALARM RELAY SETTING — Select jumper 1 (JW1-AL2 Dry) for connecting alarm relay terminal (AL2) to 24 vac (R) or to remain as a dry contact (no connection). To connect AL2 to R, do not clip the jumper. To set as dry contact, clip the jumper.

Complete C Control DIP Switches — The Con- plete C control has 1 DIP switch block with two switches. Refer to Fig. 13 and 16.

PERFORMANCE MONITOR (PM) — DIP switch 1 will enable or disable this feature. To enable the PM, set the switch to ON. To disable the PM, set the switch to OFF.

STAGE 2 — DIP switch 2 will enable or disable compressor delay. Set DIP switch to OFF for stage 2 in which the compres- sor will have a 3-second delay before energizing.

NOTE: The alarm relay will not cycle during Test mode if switch is set to OFF, stage 2.

Deluxe D Control Jumper Settings (Refer to Fig. 14, 15, and 17)

WATER COIL FREEZE PROTECTION (FP1) LIMIT SETTING — Select jumper 3, (JW3-FP1 Low Temp) to choose FP1 limit of 10 F or 30 F. To select 30 F as the limit, DO NOT clip the jumper. To select 10 F as the limit, clip the jumper.

AIR COIL FREEZE PROTECTION (FP2) LIMIT SET- TING — Select jumper 2 (JW2-FP2 Low Temp) to choose FP2 limit of 10 F or 30 F. To select 30 F as the limit, DO NOT clip the jumper. To select 10 F as the limit, clip the jumper.

ALARM RELAY SETTING — Select jumper 4 (JW4-AL2 Dry) for connecting alarm relay terminal (AL2) to 24 vac (R) or to remain as a dry contact (no connection). To connect AL2 to R, do not clip the jumper. To set as dry contact, clip the jumper.

LOW PRESSURE SETTING — The Deluxe D control can be configured for Low Pressure Setting (LP). Select jumper 1 (JW1-LP Norm Open) for choosing between low pressure in- put normally open or closed. To configure for normally closed operation, do not clip the jumper. To configure for normally open operation, clip the jumper.

Deluxe D Control DIP Switches — The Deluxe D control has 2 DIP switch blocks. Each DIP switch block has 8 switches and is labeled either S1 or S2 on the circuit board. Refer to Fig. 14, 15, and 17.

DIP SWITCH BLOCK 1 (S1) — This set of switches offers the following options for Deluxe D control configuration: Performance Monitor (PM) — Set switch 1 to enable or dis- able performance monitor. To enable the PM, set the switch to ON. To disable the PM, set the switch to OFF.

Compressor Relay Staging Operation — Switch 2 will en- able or disable compressor relay staging operation. The com- pressor relay can be set to turn on with stage 1 or stage 2 call from the thermostat. This setting is used with dual stage units (units with 2 compressors and 2 Deluxe D controls) or in mas- ter/slave applications. In master/slave applications, each com- pressor and fan will stage according to its switch 2 setting.

If switch is set to stage 2, the compressor will have a 3-sec- ond delay before energizing during stage 2 demand.

NOTE: If DIP switch is set for stage 2, the alarm relay will not cycle during Test mode.

Heating/Cooling Thermostat Type — Switch 3 provides selec- tion of thermostat type. Heat pump or heat/cool thermostats can be selected. Select OFF for heat/cool thermostats. When in heat/cool mode, Y1 is used for cooling stage 1, Y2 is used for cooling stage 2, W1 is used for heating stage 1 and O/W2 is used for heating stage 2. Select ON for heat pump applications. In heat pump mode, Y1 used is for compressor stage 1, Y2 is used for compressor stage 2, W1 is used for heating stage 3 or emergency heat, and O/W2 is used for RV (heating or cooling) depending upon switch 4 setting.

O/B Thermostat Type — Switch 4 provides selection for heat pump O/B thermostats. O is cooling output. B is heating out- put. Select ON for heat pumps with O output. Select OFF for heat pumps with B output.

Dehumidification Fan Mode — Switch 5 provides selection of normal or dehumidification fan mode. Select OFF for dehu- midification mode. The fan speed relay will remain OFF dur- ing cooling stage 2. Select ON for normal mode. The fan speed relay will turn on during cooling stage 2 in normal mode.

Switch 6 — Not used.

Boilerless Operation — Switch 7 provides selection of boil- erless operation and works in conjunction with switch 8. In boilerless operation mode, only the compressor is used for heating when FP1 is above the boilerless changeover tempera- ture set by switch 8 below. Select ON for normal operation or select OFF for boilerless operation.

Boilerless Changeover Temperature — Switch 8 on S1 pro- vides selection of boilerless changeover temperature set point. Select OFF for set point of 50 F or ON for set point of 40 F.

If switch 8 is set for 50 F, then the compressor will be used for heating as long as the FP1 is above 50 F. The compressor will not be used for heating when the FP1 is below 50 F and the compressor will operates in emergency heat mode, staging on EH1 and EH2 to provide heat. If a thermal switch is being used instead of the FP1 thermistor, only the compressor will be used for heating mode when the FP1 terminals are closed. If the FP1 terminals are open, the compressor is not used and the control goes into emergency heat mode.

DIP SWITCH BLOCK 2 (S2) — This set of DIP switches is used to configure accessory relay options. Refer to Fig. 14, 15, and 17.

Switches 1 to 3 — These DIP switches provide selection of Accessory 1 relay options. See Table 11 for DIP switch combinations.

Switches 4 to 6 — These DIP switches provide selection of Accessory 2 relay options. See Table 12 for DIP switch combinations.

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Contents Contents Safety ConsiderationsInstallation GeneralPhysical Data 50PCH,PCV Units A50-8695 SizeIPT A50-7842ef Electric HeatA50-8696 Side Discharge Back DischargeInstall Condensate Drain Mount the UnitA50-8489 A50-6260efA50-6261tf A50-6262efMetal Hose Minimum Bend Radii Copper FPT/PVCWire Field Power Supply FittingA50-8490 Sensor, Low Temperature Protection Air Coil A50-8491RVS Reversing Valve SolenoidA50-8492 HpwsA50-8493 LONNational Electrical Code Optional Wiring Temperature Switch A50-8440A50 86978698 Units with Deluxe D and Wshp Open Multiple Protocol ControlsWshp Open Control 50PCH,PCV Unit Electrical Data A50-8162Wire Field Controls A50-8441A50-8442 Rnet Wiring Specifications Rnet WiringField-Supplied Sensors for Wshp Open Controller SPT SensorsPRE-START-UP 50PCH,PCV Blower Performance Standard Unit 50PCH,PCV Blower Performance High-Static UnitFAN Rated MIN PCV Speed Airflow CFMComplete C Control Jumper Settings Refer to Deluxe D Control Jumper Settings Refer to , 15,Field Selectable Inputs DIP Switch Block S2 Accessory 1 Relay Options DIP Switch Block S2 Accessory 2 Relay OptionsSTART-UP Operating LimitsUnit Start-Up Cooling Mode Water Temperature Change Through Heat ExchangerOperating Limits 50PCH,PCV Units Cooling Heating Water Flow Rate GPM50PC006 Typical Unit Operating Pressures and Temperatures 50PC009 Typical Unit Operating Pressures and Temperatures50PC012 Typical Unit Operating Pressures and Temperatures Entering Cooling Heating Water50PC015 Typical Unit Operating Pressures and Temperatures 50PC018 Typical Unit Operating Pressures and Temperatures50PC024 Typical Unit Operating Pressures and Temperatures Temp GPM/ton Pressure Heat50PC030 Typical Unit Operating Pressures and Temperatures 50PC036 Typical Unit Operating Pressures and Temperatures50PC042 Typical Unit Operating Pressures and Temperatures Water Air TempUnit Start-Up Heating Mode 50PC048 Typical Unit Operating Pressures and Temperatures50PC060 Typical Unit Operating Pressures and Temperatures Unit Start-Up with Wshp Open ControlsA50-8444 BACview6 Display InterfaceCoaxial Water Pressure Drop Pressure DROP, psi kPaGpm 30 F 50 F 70 F 90 F 10 C 21 C 32 C 006 009 Operation Units with Aquazone Complete C ControlUnits with Aquazone Deluxe D Control Units with Wshp Open Multiple ProtocolPage Auxiliary Modulating Hot Water/Steam Heating Reheat Complete C and Deluxe D Board System Test Complete C Control LED Code Fault Descriptions LED Status Description of Operation Alarm RelayLED Fault Description Code Aquazone Deluxe D Control LED IndicaService Description Status LED Test LEDESD Refrigerant Charging A50-6286ef’ to 4’ Troubleshooting Air Coil Fan Motor RemovalA50-8163 Troubleshooting Air temperature out of rangeCooling mode FP1125 F or Reduced or no airflow in heatReduced or no water flow Reduced airflow in coolingAppendix a Wshp Open Screen Configuration Alarm StatusStatus SensorAppendix a Wshp Open Screen Configuration MaintenanceSystem Settings ConfigurationSchedule Appendix a Wshp Screen Open Configuration ServiceTest Configuration Service Point Name Password Editable Range Default LevelScreen Name Alarm Page Copyright 2011 Carrier Corporation 50PCH,PCV START-UP Checklist II. START-UPHeating Cycle Analysis Cooling Cycle AnalysisA50-8445 A50-8446

50PCH specifications

The Carrier 50PCH is a cutting-edge series of air-cooled chillers designed to deliver exceptional cooling performance in a wide range of commercial applications. Engineered with efficiency and reliability in mind, the 50PCH stands out for its innovative technologies and robust construction, making it a preferred choice for facility managers and HVAC professionals.

One of the main features of the Carrier 50PCH is its advanced scroll compressor technology. This system consists of high-efficiency scroll compressors that optimize energy consumption while maintaining consistent cooling output. The incorporation of variable speed technology enables the chillers to adapt to fluctuating load demands, resulting in significant energy savings and reduced operational costs.

The 50PCH chillers also boast a high energy efficiency ratio (EER) and coefficient of performance (COP), ensuring compliance with stringent energy regulations and standards. They are designed with eco-friendly refrigerants, which contribute to lower greenhouse gas emissions, making them an environmentally responsible choice for modern buildings.

In addition to its energy-efficient operation, the 50PCH series is equipped with advanced controls that allow for seamless integration into building management systems. The intuitive interface facilitates monitoring and adjustment of set points, ensuring optimal comfort conditions. Furthermore, the chillers come with extensive diagnostic capabilities, enabling proactive maintenance and reducing the risk of unexpected downtime.

The robust construction of the 50PCH series enhances durability and reliability. With an all-weather aluminum cabinet, these chillers are designed to withstand harsh environmental conditions, ensuring long-term performance. The units undergo rigorous testing to meet high industry standards for quality and reliability.

Another distinguishing characteristic of the Carrier 50PCH is its whisper-quiet operation. Engineered for low sound levels, these chillers minimize noise pollution in sensitive environments, such as hospitals, schools, or residential areas.

In summary, the Carrier 50PCH series combines exceptional performance, energy efficiency, and innovative technology in a robust and reliable package. It highlights the best in modern HVAC design, making it an ideal solution for a wide array of climate control needs in commercial and institutional settings. With its advanced features and commitment to sustainability, the 50PCH is undoubtedly a leader in the air-cooled chiller market.
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